Focal K2 POWER M SUB 5 KM

• Sensitivity (1W, 1m, infinite baffle) SPL1W 78.5dB
• Frequency response 35 - 250Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 65Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 1.30
• Total quality factor QTS 1.00

Large signal parameters

• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.91mH
• VC Diameter 60mm

Magnet

• Force factor Bl 7N/A
• Motor constant Bl/√RE 4.04N/√W

Diaphragm

• Effective diameter 110mm
• Effective area SD 95cm²
• Moving mass MMS 51g
• Moving mass (without air load) MMD 50.3g
• Material Kevlar Sandwich

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 1.5L
• Mechanical resistance RMS 4.17N·s/m
• Surround material TMD

Dimensions

• Nominal diameter 5″
• 154mm
• Overall diameter 154mm
• Baffle cutout diameter 130mm
• Mounting depth 69mm
• Volume occupied by the driver (estimated) 0.91L
• Net weight 2.2kg